| Kälin, Moritz | Moritz Kälin | Actor | 1985 | 1 | |
| Korner, Klaus | Klaus Korner | Actor | 1985 | 1 | |
| Keller, Ruth | Ruth Keller | Costume Designer | 1985 | 1 | |
| Kälin, Beat | Beat Kälin | Lighting Designer | 1985 | 1 | |
| Kälin, Werner | Werner Kälin | Lighting Designer | 1985 | 1 | |
| Kuriger, Benno | Benno Kuriger | Lighting Designer | 1985 | 1 | |
| Kerč, Boris | Boris Kerč | Actor | 1986 - 2002 | 3 | |
| Koho, Jorma | Jorma Koho | Actor | 1985 | 1 | |
| Kember, Steven | Steven Kember | Actor | 1985 | 1 | |
| Kirmse, Annette | Annette Kirmse | Actor | 1985 | 3 | |
| Knoll, Raimund | Raimund Knoll | Actor | 1985 | 6 | |
| Kaiser, Christian | Christian Kaiser | Actor | 1985 | 4 | |
| Kramer, Susan | Susan Kramer | Actor | 1970 | 1 | |
| Kolin, Irmgard | Irmgard Kolin | Actor | 1985 | 1 | |
| Koch, Knut | Knut Koch | Actor | 1964 - 1985 | 2 | |
| Krome, Michael | Michael Krome | Actor | 1985 | 1 | |
| Koppert, Martin | Martin Koppert | Actor | 1985 | 1 | |
| Kater, Loes | Loes Kater | Costume Designer, Designer | 1985 | 2 | |
| Kraciková, Olga | Olga Kraciková | Actor | 1985 | 1 | |
| Karas, Karel | Karel Karas | Actor | 1985 | 2 | |
| Kracik, Petr | Petr Kracik | Adaptation, Director | 1985 - 1997 | 6 | |
| Kiene, Bart | Bart Kiene | Actor, Adaptation, Director, Dramaturg | 1985 | 5 | |
| Keegan, Shelagh | Shelagh Keegan | Designer | 1986 | 2 | |
| Kunowski, Tilman | Tilman Kunowski | Dramaturg | 1986 | 1 | |
| Kogan, Henri | Henri Kogan | Actor | 1986 | 1 | |
| Kwoll, Werner | Werner Kwoll | Actor | 1985 - 2008 | 2 | |
| Kron, Gustaw | Gustaw Kron | Actor | 1986 | 1 | |
| Kujawski, Igor | Igor Kujawski | Actor | 1986 - 2010 | 2 | |
| Katsioula, Elina | Elina Katsioula | Designer | 1985 | 1 | |
| Kayssler, Maria | Maria Kayssler | Actor | 1967 - 1986 | 4 | |
| Khademi, Nader | Nader Khademi | Actor | 2014 - 2016 | 5 | |
| König, Nina | Nina König | Mask Maker | 2014 - 2015 | 2 | |
| Kehrwand, Otto | Otto Kehrwand | Actor | 1985 | 4 | |
| Kokkin, Anne Elisabeth | Anne Elisabeth Kokkin | Actor | 1986 | 1 | |
| Karlsen, Anne Kirsti, Krogvik | Anne Kirsti Krogvik Karlsen | Actor | 1986 | 1 | |
| Klvana, Kathryn | Kathryn Klvana | Actor | 1985 | 1 | |
| Kaufmann, Dieter | Dieter Kaufmann | Composer | 1985 | 1 | |
| Kawabuchi, Yuko | Yuko Kawabuchi | Actor | 2006 - 2018 | 12 | |
| Kibo, Chihiro | Chihiro Kibo | Actor | 2006 | 1 | |
| Kito, Ayumi | Ayumi Kito | Lighting Designer | 2006 | 1 | |
| Kouroudi, Lena | Lena Kouroudi | Actor | 1985 | 1 | |
| Kalogeropoulos, Nikos | Nikos Kalogeropoulos | Actor | 1984 - 1985 | 2 | |
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